Calculating machine



Oct. 17, 1933.

W. BALL CALCULATING MACHINE Original Filed May 31 1930 5 Sheets-Sheet 1 hwEm'oer' W. EAL-L 1933- w. BALL 1,930,871

CALCULATING MACHINE Original Filed May 51, 1930 3 Sheets-Sheet 2 INVEHTQQ? w BALL,

FEE!

ATTOENEY Oct. 17, 1933. w. BALL CALCULATING MACHINE Original Filed May 31, 1930 3 Sheets-Sheet 3 FIG.7

WBALL gm 7 2 yg/fom g Patented Oct.i 17, f

C LQ' I GMA H I Y f William'Ball," WallingtonQ"England;assignor, by. g

f f direct-andmesne assignments,-to British Add-3 I V 3 n 1 :England drag-and Calculating Machine; Limited, London,

.1930; iseiial" N11;

j]: 458,629, and in "Grcat Britain August 14, 1929.

n r-Dividdhnd this application-August 13,1931."

' serial No. 556,834

granted 17,1933. I

' The chief, object of thisinventinn is toprovide improved, 1; simple and eflicien't rriechanism for settihgthe mechanism ofthe niachine in ac-' cordan'ce with a predetermined item as repre-Y .sented byh the keys orstops depressed. f}

A further object of this invention'i's to provide such setting j mechanism which, when used I in machine, suchas shown in the parent'fcasewfll enable wen spaced keys to be brovided and which conversely will also allow of the keys or stops Y nominational column to be'pr'o'v'idedl, A still further object of the invention :istoflprovide such on: the, moving? "parts is considerably' reduced thereby' enabling the mechanism to. give efficient and long service. f j

culating machine comp'risingfa plurality of de'e nominational column'ssuchias that shownin the parent case and including movable actuating members tor the totalizer wheelsjandseparate" setting members therefor adapted to coop erate with 'depressedlreys in the associated denomi'na tional column, each'setting member isfarranged a' rotational movement" of s'aidgsetting member towards the keys to the "associated j denornina tionalcolumn so that the "setting member 00-" operates with a depressed key 'inthe column to efiect'asettingof the totalizer wheel correspond- "The inventi'onwill be moreclearly understood] r with reference to the following de s'c riptiori and tdtheaccompanying drawings" which show the features of the invention as applied. to the prevferre d form of calculating machinejshown 'in jthe connection with a keyboard of a calculsa'lting niachine; and 'j 'etting mechanism inQwhich the number of parts Fig. an nd;view rc igu titgtmtgtbt is'reduced toa minimum and in whichthewear' v v v V s F'g. 5 is a detail sectionalperspective vieiv' ccording to theinvention; therefore, in a cal? 1 tionj jectingat the right, as customary.-

euerlithat thelfeatnres of the invention although illustrated with reference-to the preferred form of! thf machine can be applied to other form sby suitable llnodification thereof and g the invention must, therefore, not be considered limited to the inaftle f referred to.

n In the drawings; i.

might isa sectionalplannfthemachine;

Fig-211s a view fromfthe left'of acalculating unit detached, the column showing nine numeral calculating machine shown in the drawings here keys in] addition to the column release key at the, extr me right hand end and corresponding toone of t f fig p iiinds" columns in the machine}; I Fig, 3 isa corresponding view from the right of I the calculating 'unit shown in Fig.7 2 with'type'bar L omitted and the totalizer wheel .disengagedfrorn the actuating rack'to clearly indicateithe normal positiong'ther eof whenthe unit is mounted'inlthe g the front end of the unit onl3 with the column 7 releasejkey omitted and showing-more partied? larly-the construction of the stubs oiuthe nurnera'l keys fandlthe setting rack.

FigQG isanenlarged rightlhand end' viewjofn @1512 "showing fonly the coluxlnn release keyin staggering of the abutments on; the- I depressed ciondit ion and the a'ssociated clearing,

bar I.

I release key in anon-depressed or'released con'di:

'hich iceperates with an the keys in, the" r to move idiflerentially'with'respect to the jassoe mated actuating member and" means" is provided for causing the diflerential movement to produce *Fig 8' is afdetailperspective of the 7 ing bar. I'Ihe "reference numerals-used herein I correspond witli'thoseemployed" for similar parts v s. any:

in= thebaifent casei i Y Although the-machine is readily adaptable to has be'enshown as hand operated.

, :tReferring toa the .drawings.-;the main power operation,.the'preferred iform illustrated operating a shaft is identified bjythe numeral landi-s carried in bushings on, each ofv the, main side frames '3,- anpperating handle 4 keyed to the shaft 1 pro? The s ide frar'nes 3 are identical, provided with a pair of open; housingsarranged an assembly of calculating units l2; Qhcl .O'ffwhich isjshown in Figs} and 3. I Q Y if f .Theconst'ruction of the side frames '3 and of and $39. 15' to 'receiue'jhardenedsteel bolts 10 an 'urunnin g the width of themachinegand serving" to carry; pares-ceas only those figures being shownwhich are deemed necessary 'for a. complete understandfj.

ingof theinvention. It willfbe un'derstbodfhoW- 1 the sectionalized form of the keyboard is clearly shown in the parent case a series of spacing washers 15 of dimensions corresponding to the width of each section 16 of the keyboard associated with each unit 12 are arranged along the bolts 10 and 11 to fixedly locate the several units.

Referring now more particularly to Figures 2 and 3, where the detachable unit 12 is illustrated, 16 is a keyboard section as before mentioned, being secured by bolts or rivets to the out-turned flanges 26 and 27 of a plate 28, hereinafter termed a stretcher plate, forming the foundation of the unit 12. V

This stretcher plate 28, as clearly shown in Figures 2 and 3, is a plain stamping of sheet metal, blanked and pierced to carry the various parts of the calculating mechanism, and flanged at 30 to carry a guide plate 31, through which the stubs of the keys of the section project.

The guide plate 31 is also tied to the top plate 16 by pillars 33, 34 and 35, whereby substantial rigidity of the unit is attained, and the numeral keys 32 and the column release keys 3211 both have flat shanks 36 passing through aligned laterally extending slots 37 and 38 in the top plate and guide respectively.

The totalizer wheel 20 of the unit is carried on a spindle 89a mounted on a bell crank pivoted to the stretcher plate 28 at 91, the setting of the wheel 20 being effected by means of differentially geared actuating and setting mechanism including a separate setting rack 58, which by reason of the differential movement between the elements of said mechanism, is moved to co-operate with a depressed key 32 in the column and thereby set the wheel 20 in accordance with the key designation as will be hereinafter described. v

The column release key 3211 is normally depressed and locks the setting rack 58 in the initial positionas shown in Fig. 2; The means for releasing the setting rack when a numeral key is depressed will now be described; Each key shank 36 of the keys 32 and 32a of each column or section 16 is provided with an outstanding lug 39 on the flat face of the shank, with which lug a compression spring 40, fixed to the guide plate 31, is connected so that the key is pushed upwardly by the spring 40 to be adjacent the underside of the top plate 16. v v

' On both the side edges of each key shank 36 two projections 42, 42a are formed, one for limiting the upward movement andthe other for limiting the downward movement of the key, while a cam surface 41 and a recess41a are also provided for co-operating with a clearing bar 45 extending the length of the keyboard section 16.

The clearing bar 45 is substantially of L-shape section, see Fig. 8, and is pivotally mounted on the stretcher plate 28 by means of cylindrical extension end pieces 46, 47, mounted in bearings formed in inturned flanges 48 and 49, provided oneat each end of the stretcher plate 28 and adjacent the top plate of the keyboard section 16. As shown in Fig. 7, when a key is not depressed the short arm 45a of the clearing bar 45 bears against the lower portion of the cam surface 41 on the key shank 36 by meansof a tension spring 50, flxed to the guide plate 31 and connected to the short arm 45a substantially centrally ofthe clearing bar 45, see Fig. 2, but on depression of the key, see Fig. 6, the cam surface 41 causes the {clearing bar to rock to the right about its pivotal axis until the recess 41a is reached, when the short arm 45a snaps into the recess to retain the key in the depressed condition against the compression in its spring 40.

Thus, with the numeral keys 32 in undepressed condition and the associated column release key 32a depressed as shown in. Fig. 2, and locking the setting rack 58, the short arm 45a engages with the cam surfaces 41 on the numeral keys and with the recess 41a in the column release key, but upon depression of a numeral key the consequent rocking of the clearing bar disengages the short arm 45a from the recess 41a in the column release key so that the latter restores by means of its spring 40, and releases the setting rack 58.

The column release keys 32a are returned to their locking position (that is depressed and engaging the first abutment on the setting rack 58) by means of pins 171 mounted on a rocking shaft 170, each pin 1'71 engaging in the slot 172 of the associated column release key, so that when the shaft 170 is rocked to rotate the pins 171 downwardly, the latter pull the non-depressed column release keys into the'depressed position. This operation occurs after the setting racks have been restored to theno'rmal position, as shown.

With reference now more particularly to Figs. 2 and 3, the stretcher plate 28 is provided with a number of slots 51, 52, 54, 44a and 44b, which form guides for mounting both the differentially geared actuating and setting rack mechanism hereinbefore referred to, this mechanism being such that the actuating rack adapted to move differentially with respect to the associated setting element.

This differentially geared mechanismincludes a linearlymovable pinion for operating the racks and is similar to that describedi'n my United States Patent No. 1,742,053 andagain employed in. the arrangement described in my United States. patent application (Serial No. 243,660). and comprisesan upper normally movable rack 53 provided with headed pins 69 riding in the slots 51, 52, a normally" stationary lower rack 57, hereinafter referred to as a transfer rack, pro.- vided with headed pins 44 ridingin' the slots 44a and 44b, and an actuating rack 56 formed with a slot 66 engaging with a headed pin 67 mounted on the stretcher plate 28. The transfer rack57 is normally held in the stationary position by a pin 101 on a transfer lever" 94 engaging in a notch 103 in .the rack 57, and is only released for transfer under such conditions as are described in the parent case.

'The linearlymovable pinion designated 55 is mounted onthe stretcher plate 28 by means of a pin 55a riding in the slot 54, a washer 55b maintaining thepinion in position on the plate 28 and the pinion engaging with both. the upper and lower racks 53 and 57 respectively and being connected to and mounted on the actuating rack 56 by thepin 55a. 1

With this arrangement it will be seen that the movement of the uppenrack 53 is in all cases double that of the pinion 55 when the transfer rack 57 is stationary, andconsequently double the movement of the actuating rack 56.

With reference now to thesetting rack 58 heretofore mentioned, in contradistinction to either of the constructions disclosed in the prior specifications heretofore referred to, in the present arrangement a separate and rising setting rack 58, is employed, the forward end of which is pivoted at .59 to the 'upper rack53, while the other end is provided with a stub 60 arranged to ride in an inclined guide slot 61 formed in the body 62 of the actuating rack 56, the arrangep I 1,930,871 -ment being such that during the movement of the difierentially'geared mechanism from the .zero position illustrated, thesetting 'rackrises towards the keyboardby means of theguide slot 61 and the differential movementbetween the actuating rack 56 and the upper rack 53, it being understood that since'the upper rack-53; and

therefore the setting rack 58, gains on the actu ating rack 56, the stub 60 and the rear end'oft-he setting rack 58 will be caused to ride 'up the inclined slot-61 i'n'the afctuatingrack'56; tobring,

the setting rack into co-operation with a key which may have-been depressed in the' associated column; I

In the prior specifications heretofore referred;- to, a single stop or abutment was mounted on the upper moving rack for 'cooperating with any depressed key in the column, which resulted in the travel of the upper 'rack being unduly'large, and

in considerableimpact arising between theabut ment and a depressed key, especially if such-key was of a high numericalvalue, but according' to this arrangement the provision of a separate setting member rising towards a depre'ssedkey considerably reduces-the impact against the key and enables the travel of the upper rack 53, and

consequently of the setting rack 58, to berek duced, and, further, itis possible touse a separate abutment for each key of the column,

whereby the wear on any individual abutment is considerably reduced, and the durability" and freedomfrom adjustment of this part of the differentially geared actuating and setting mechanism ensuredby the reduction of the. impact between the setting rack abutment 63 and the keys.

v eliminating the necessity for a further abutingly eleven or twelvefabutments .63, according to-whether the end of the slot61 is employed as therein.

Theabutments 63are arrangedsothat the forward or right hand abutment 63, seen in Figure 2, co-operates with the 0- or column'release key. 32a, the second abutment with the l key, andiso on, the last or left hand abutment cooperating with the 8. key; and the end'of the slot 61in the'actuating rack'56 being employedfas the final or 9 abutment corresponding with the full travel of the setting rack 58,. and thereby ment on such setting rack, although, if desired, ofycoursasuch an abutment could ;be provided to co-operate with the stub ofthe 9 key; 1

J vIt will be understood that for a pencecolumn twelve keys will be provided, andcorresponda limit or not, and'that the. number of keys and co-operating' abutments is adapted to the re:- quirements of each particular case, the particular unit illustrated being one 'of the poundscolumns been depressed, is controlled from the main op-' crating shaft 1 of the machine through an opcrating member constituted by. a rocker pivoted v to a shouldered pin 71 at the foot of the stretcher plate 28, and having three arms, the first .72 being provided with an anti-friction roller '73 which" 7 5- when the unit is assembled in. the machine abuts against a control arm 74 on the-main operating shaft 1, the roller,-if permitted tending to follow the arm 74 under spring action as hereafter'explained during theinitial stroke ofthe handle 4, which, as customary, is in the" direction of the arrowA in'Fig. 2

A second arm 75 forms 'theoperativeconnec tion with thepinion 55 of the differentially geared actuating and setting mechanism, being formed with a slotted end 76 in which rides a pin 7'7 carried by a link ;'78in turn ca'rried on'the' pivot 55a of the pinion 55.-

Apin f9 on'the arm 75 and a second pin 80 on the link 78 are connected by a coil spring-'81 which, duringfoperation of the machin'e,-main'- tains the pin 77 tofthef-rightof the slotted end' ,7 6 as shown, and ensures" that 1 thesetting rack 58 is maintained in the normal position during the demession of the column; release keys towards the end of the ultimate return stroke of the main shaft, as'is explained in'the parent case Serial No'458,629. It will benoted that the position of the'rocker 70 and of the pin in the slottedend 76 thereof as shown inthe drawings is that when the handle" 4 has been moved slightly forward without a key being depressed. Thus, if the ham dle is restored the slottedend would move across the'pin 7'7 until the latter abuts against the-op} positeend to that shown. 1

Athird arm 82 completes the rocker 70,'and is provided withan anti-friction roller 83 which cooperates with an oscillating. lever 84 "pivoted; to the stretcher plate 28 at -85't0 which a settable type bar 240 is connected, the said type bar forming part of the printingmechanism fully described and claimed in divisional. application Serial No;

To enable th roller u73' to follow the arm fl and the differentially geared actuating and setting-mechanism to be substantially self-acting, a

spring 64 is connected between the end of the setting rack 58 and .a pin- 65 ion the actuating rack 56 so. as to be undertension, in the normal position of the said'mechanism, whereby when the setting rack 58 is unlocked, by releasing'the column release key 32a, and the handle "4 is moved forward, the setting rack 58, the actuati-ng rack 56 and thepim'on 55, together with the rocker 70 automatically move rearwardly due to the tension inthe spring-'64, the roller '73 thus following the arm 74, and-therate of the movement of the parts being governed by the movement of the handle. It willb'e noted that the connection between the arm 74, and the arm :72 is a detachable and disconnectable one permitting this automatic movementuntil the setting rack 58 is arrested by an abutment 631 engaging with a depressed key, whereupon the wholeiof the actuating mechanism will be brought to rest and the arm. 74 will leave the roller '73 as the stroke ofthe main shaft is completed. During the return stroke of the handle 4, the arm '74 abuts against the roller '73 to move the rocker 70for- *wardly and thereby restores the mechanism against the tension of the spring64. To facilitate spring 64. 7

' Assuming that, in place of thecol'umn releas e key 32a shown depressed in'Figure' 2, the 8-Inu'- I meral keyfis depressed {and the operating handle 4 turned in the direction of the arrow'A; the set ting rack '58 and the actuatifng-rack 56-will1mov'e V p g 7 14d the automatic movement of the parts, a further tension sp ing 64a is provided connected between a points on the stretcher plate 28 andthe rocker l 70, or thespring 64a, maybe used in place' of the to the left (Figure 2) the rocker turning in an anti-clockwise direction as the arm 74 rotates away from the roller 73 until the respective abut ment 63, i. e. the left hand one, engages the stub of the 8 key, when the further movement of the actuating rack 56 will be arrested and the arm 74 will leave the roller 73.

In this position the actuating rack 56 will have moved a spaced equivalent to eight facets of the totalizer wheel 20, and if the wheel 20 through its pinion 68 be then engaged with the actuating rack 56 and the operating shaft 1 returned to its initial position, the totalizer wheel would show a reading corresponding with the item set up in the key column, i. e. the number 8.

The engagement operations of the totalizer wheels 20 are fully described in the parent case.

Asappears more clearly from Figure 3 the slots 51 and 52 are arranged of greater length than the travel of the rack 53, and their extremities are provided with apertures 51a and 52a respectively, through which the heads of the pins 69 which carry the rack 53 can pass and the rack thereby be removed or fitted, suitable spacing washers being provided, preferably integral with the pins, of standard thickness throughout the machine, to reduce the friction where desirable.

Similarly, the heads of the pins 44, carrying the lower or transfer rack 5'7 and riding in the slots 44a and 44?), can pass through similar apertures in the stretcher plate 28, so that the transfer rack may be removed, and in this manner assembly of the unit 12 or replacing of any parts is greatly simplified.

With reference more particularly to Figure 5 itwill be seen that the abutments 63 on the setting rack 58 are alternately staggered as at 63a and the stubs of the key shanks 36 of the numeral keys 32 are each formed with a lug 43, the lugs in successive keys being staggered to allow, as the setting rack 58 rises towards a depressed key, the abutment corresponding to the next higher numeral key to pass the lug 43 of the depressed key. Thus a larger abutment may be employed to give a more positive co-operation with the keys, at the same time allowing abutments of higher numeral keys to pass a depressed lower numeral key without interference. It will be understood that provision of staggered lugs in the key shanks I v is equivalent to staggering the actual key shanks and allows of a standard key sions to be used.

As an alternative to staggering the abutments on the setting rack, two or more of such racks may be provided the one having the abutrnents 63 and the other the abutments 63a.

By the provision of such a setting rack or racks increased clearance of the key stems is obtained and the durability and freedom from adjustment of this part of the machine improved by giving a clearance adequate to allow for any wear in the parts.

From the foregoing, it will be seen that by arranging the setting rack 58 separate from the actuating rack 56 adaptation to various requirements is also provided for, while with the rising setting racks employed in the'preferred embodiment any shockpimparted to the key shanks is of uniform dimenreduced and the load more evenlydistributed throughout the stroke of the actuating mechanism, the, plurality of abutments provided also reducing wear to a minimum.

It will be understood that in cases where there 1 are only a small number of keys to a column, for

example, in the farthings column of the machine shown, or where only one or two keys are necessarily operative as in the tens of shillings columns of a pounds, shillings and pence machine, a simpler form of setting rack can, of course, be used, such as one with a single abutment.

Although the invention has been more particularly described in connection with its use as a setting mechanism for a calculating machine comprising detachable interchangeable denominational units, it will be understood that the invention can be applied with advantage to other forms of calculating machines employing actuating racks which have differential movement with respect to the setting racks.

Many modifications of the above described constructional features will be apparent to those skilled in the art to which this invention relates. For example, instead of employing a straight inclined slot, as above described, a curved slot may be employed to assist the rising action of the setting member.

Among the many advantages accruing from the adoption of this invention may be mentioned the following:ready conversion to varying denomination requirements, a standard key may be employed for all units in any column, whereby manufacturing and production costs are materially reduced; the wear on the moving parts is reduced whereby there is less likelihood of the machine getting out of order; and, further, the Whole of the mechanism may be cheaply produced Without any elaborate tools and may be easily and quickly assembled by means of unskilled labour.

What I claim is: 1

l. A calculating machine comprising a plurality of denominational columns each having associated therewith, a totalizer wheel, an actuating member for the totalizer wheel, a setting member adapted to co-operate with depressed keys in the column, means for moving the setting member differentially with respect to said actuating member, and means for causing the differential movement to produce rotational movement of said setting member towards the keys of said column to co-operate with a depressed key therein for effecting a setting of the totalizer wheel corresponding to the key designation whereby adequate clearance for a large number of keys is provided and the travel of and wear on the setting member is reduced.

2. Acalculating machine comprising a plurality of denominational columns each having associated therewith a totalizer wheel and differentially geared actuating and setting mechanism for the totalizer wheel including a separate setting member pivotally mounted on a member of said mechanism differentially movable with respect to the actuating member of said mechanism, means for actuating said mechanism to produce the differential movement between the members thereof, abutments on said setting member for co-operating withdepressed keys in the column, and means whereby the differential movement between the members of said mechanism imparts both longitudinal and rotary movementto the setting member to bring an abutment against a depressed key for effecting a setting of the totalizer wheel corresponding to the key designation.

3. A calculating machine comprising a plurality of denominational columns each having associated therewith a totalizer wheel and differentially geared actuating and setting mechanism for the totalizer wheel including a separate setting member pivotally mounted on a member of 59 'ity of-.denominational columns each having asthe movable rack and to rotate towards the keys said mechanism differentially: movable with .re-'- spect to V theaactuating member, Q1 of 1 said mechanism, me,a-ns for actuating saidnmechanism'to produce; the differential movement between the membersithereof, abutments on said-setting I membenfor. co-operating with depressed. keys in nism impartsboth longitudinal, and Trotary move-- cment to the setting membertoibring'an abut ment against a depressed key for effecting a 'set,-'

ting of thertotalizer .wheel key designation. l j '4. Acalculating machine comprising alplurality of denominational columns each having associatedtherewith aigtotalizer wheel, an actuating corresponding to. the

rack for the ,totalizer wheel, a movable rack-,(af stationary rack, acmovable pinion engaging with both said movable and stationaryracks,and car-t rying said actuatingrack', means for moving said pinion to cause thereby differential movement between saidactuating racks and said-1 movable rack,ra separate setting member-pivotally mountedon said movable rack, abutments on. saidnsetting member 'for .co-operatingwith depressedkeys in the column and; meanswhereby said dif-. ferential movementfiproduces both longitudinal c and rotarylmovementof said setting member to bringan 'abutment againstma depressed key for effecting a setting of the totalizer-wheel corre-i spondingato: the keydesignation. l t

5.1 A calculating machine comprising agplural ity ofdenomination. columns eachhaving asso-, ciated therewith artotalizer wheelfanactuating rack for: the totalizer wheel, a movable rack, a

stationary rack, a. movable pinion engaging with both said movable and stationary racks, and car- A ryingsaid actuating rack; meansformoving said pinion to cause thereby difierenti'al movement be-: r

tween said actuating rack and said movable rack,

abutments on said setting member for co-operating with depressed keys in the colmnn, and guiding means for the setting member at its free end whereby said' differential movement. produces both longitudinal and rotary movement of said setting member to bring anabutment against a depressed key for effecting a setting of the totalizer wheelcorresponding to the key designation;

- 6. A calculating, machine comprising a plural-'- sociated therewith a totalizer wheel, an actuating rack for the totalizer wheel, a linearly movable rack, a stationary rack, a movablepinion engaging with both said movable andstationary racks ing said pinion to cause thereby differential movement between said actuating rack and said movable rack, asep'arate setting member pivotating rack for the free end of the -setting member, whereby said differential movement causes the settingmember both'to move linearly with to ring an abutment against a depressed key for effecting a setting of the totalizer wheel corresponding to the key designation; e

7. A calculating machine comprising a plurality of denominational columns each having associatedtherewith a totalizer wheel, an actuating rack for the totalizer wheel, a linearly movable rack, a stationary rack, a movable pinion engaging with both said movable and stationary racks and carrying said actuating rack, means for moving said'pinion to cause thereby differential movement between said actuating ,c rack and said movable rack, a separate'setting member pivotally mounted on said movable rack, abutments on said, setting member for co-operatingwith to bring an, abutment against a depressed; key J for effecting a settingof theytotalizer wheellcorresponding to the, key designation. 7 c, =8; A calculating machineincluding a main ,operating-shaft and comprising a plurality of denominational columns eachuhaving associated therewith-a totaliz'er wheehan actuating rack for the totalizerwheel, a linearly, movable rack," a stationary Track, a movable pinion, engaging with both said movable and stationary racks and carrying'said actuating-rack, a separate setting;

normally locking the setting memben'means;

whereby. the setting member is. released when a key in the columnis depressed; an operating member for said pinion formed forqdetachable member said pinion moves automatically under the :spring action' -to cause thereby differential movement between said actuating rack and said' g movable rack, means for detachably and discone nectably connecting said operating member with thelmain shaft to p'ermit'of thehautomaticmovement of the operating member with the main shaft until arrested by an abutment on the setting member engaging a depressed key, and a guide on the actuating rack for the setting member at. its free endflwhereby said differential movement causes the setting member both to movelinearly with said movable rack and to ro tate towards the keys to bring an abutment against a depressed key for effecting a setting of the totalizer wheel corresponding to the key des-. 'ignation, r Y a i 9. A calculating machine including a main operating shaft and comprising a plurality of denominational columns, each having associated therewith a-totalizer wheel, an actuating rack for the totalizerwheel, a linearly movable rack, a stationary rack, a movable pinion engaging with both said movable and stationary racks and carrying said actuating rack, a separate setting member pivotally mountedon said movable rack,

' abutments on said setting member for co-operating with depressed keys in the column, means normally locking the setting member, means whereby the'setting member is released when a key in the column 'isdepressed, an operating member for said pinion formed for detachable and disconnectable connection with the main operating shaft, anoperative connection between said operating member-and said pinion, a spring connected between the operating member and a fixed point and a further spring connected between the actuating rack and the s'etting member, whereby. on release of the setting member said pinion moves automatically under the spring 105 and disconnectable connection with the main op-- 1 action to cause thereby differential movement between said actuating rack and said movable rack, means for detachably and disconnectably connecting said operating member with the main shai't to permit of the automatic movement of the operating member with the main shaft until arrested by an abutment on the setting member engaging a depressed key, and a guide on the actuating rack for the setting member at its free end, whereby said difierential movement causes the setting member both to move linearly with said movable rack and to rotate towards the keys to bring an abutment against a depressed key for eifecting a setting of the totalizer wheel corresponding to the key designation.

10. A calculating machine including a main operating shaft and comprising a plurality of denominational columns each having associated therewith a totalizer wheel, and actuating rack for the totalizer wheel, a linearly movable rack, a stationary rack, a movable pinion engaging with both said movable and stationary racks and carrying said actuating rack, a separate setting member pivotally mounted on said movable i rack, abutments on said setting member for cooperating with depressed keys in the column, means normally locking the setting member, means whereby the setting member is released when a key in the column is depressed, an operating member for said pinion formed for detachable and disconnectable connection with the main operating shaft, an operative connection between said operating member andrsaid pinion, a spring connected between the actuating rack and the setting member whereby on release of the setting member said pinion moves automatically under the spring action to cause thereby difierential movement between said actuating rack and said movable rack, means for detachably and dis- ;connectably connecting said operating member with the main shaft to permit of the automatic movement of the operating member with the main shaft until arrested by an abutment on the setting member engaging a depressed key, a lateral projection on the free end of the setting member riding in an inclined guide slot in the actuating rack whereby said differential movement causes the setting member both to move linearly with said movable rack and to rotate towards the keys to bring an abutment against a depressed key for efiecting a setting of the totalizer wheel corresponding to the key designation.

11. A calculating machine comprising a plurality of denominational columns wherein the numeral keys of each column are provided'with lugs, the lugs of successive keys being staggered and each column has associated therewith a totalizer wheel, an actuating rack for the totalizer wheel, .a linearly movable rack, a stationary rack, a movable pinion engaging with both said movable and stationary racks and carrying said actuating rack, means for moving said pinion to cause thereby difierential movement between said actuating rack and said movable rack, a separate setting member plvotally mounted on said movable rack, abutments on said setting member for co-operating with depressed keys in the column and arranged in staggered relation corresponding to the stagger otthe lugs on said keys whereby abutments corresponding to higher numeral keys can pass a depressed lower numeral key without interference, and a guide on the actuating rack for said setting member at its free end whereby said differential movement causes the setting member both to move linearly with said movable rack and to rotate towards the keys to bring an abutment against a depressed key for 'eifecting a setting of the totalizer wheel corresponding to the key designation.

WILLIAM BALL. 

